[PATCH] D145605: Revert two patches to fix PR58452 regression

[Erich Keane via Phabricator via cfe-commits]

erichkeane created this revision.
erichkeane added reviewers: tstellar, aaron.ballman.
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erichkeane requested review of this revision.

PR58452 is a regression in the 16.0 release branch caused by both:
b8a1b698afb2fc84819c7596090aabf4d826b436 <https://reviews.llvm.org/rGb8a1b698afb2fc84819c7596090aabf4d826b436> and
3a0309c53674be56b5cfce038d78a0c2c6e2a98c <https://reviews.llvm.org/rG3a0309c53674be56b5cfce038d78a0c2c6e2a98c>

This patch reverts both of those to make the 'valid' code stop diagnosing
at the expense of crashes on invalid + unclear diagnostics.


https://reviews.llvm.org/D145605

Files:
  clang/include/clang/Sema/Sema.h
  clang/include/clang/Sema/SemaInternal.h
  clang/lib/Sema/SemaTemplateDeduction.cpp
  clang/lib/Sema/SemaTemplateVariadic.cpp
  clang/lib/Sema/TreeTransform.h
  clang/test/CXX/temp/temp.decls/temp.variadic/p5.cpp
  clang/test/SemaTemplate/cxx1z-fold-expressions.cpp
  clang/test/SemaTemplate/pack-deduction.cpp

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